Description:
A discussion of the history of conic sections, one of the oldest math subjects studied systematically and thoroughly, with a description, formulas, properties, a proof, Mathematica notebooks, the ellipse seen as a circle, second degree curves, intersection of circles, orthogonal conics, Pascal's Theorem and Brianchon's Theorem, and related sites. Illustrations, including one showing the intersections of parallel planes and a double cone, forming ellipses, parabolas, and hyperbolas respectively. Hosted by the Math Forum.
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